Peteb jacob bode



(No Model.)

P. J. BOPP..

PUMP. No. 340,414. Patented Apr. 20, 1886.

UNITED STATES PATENT (DEEICE.

PETEE .I AcoBBonE, 0E DUQUOIN, ILLINOIS.

' PUMP.

QPECIFICATION forming part of Letters Patent No. 340.414. dated April 20, 1886.

Application filed December 18, i885. Serial No. 186,075. (No model.)

To all 1071/01/12; it 17mg concern:

Be it known that I, PETER .Tacos Bonn, of Duquoin, in Perry county, in the State of Illilnois, have invented new and useful Improvements 1n Pumps; and I do hereby declare that the following is a full and correct description of the same, reference being had to the accompanying drawings, wherein- Figure lis a perspective view of a pump embodying my invention. Fig..2 is a vertical section of the same. Fig. 3shows amodification to produce a continuous stream with the single-acting pump.

This invention relates to that class of pumps known as diaphragm-pumps 5 and it consists in the arrangement of diaphragm-chamber and check-valve chamber with its wastehole and waste-hole valve, and in other things more particularly pointed out and claimed hereinafter.

That others may fully understand my improvement, I will particularly describe it.

The advantage of a diaphragm in place of a sliding piston t0 carry the valve is: The piston requires to be provided with a packing, which slides back and forth in the pumpbarrel and soon wears away sufficiently to cause the same to leak. To replace the packing requires the services of an expert, and for that reason domestic pumps are seldom in good order. The diaphragm, on the contrary, will be much more durable, because it has no frictional contact to cause it to wear out, and it only deteriorates from the interfriction of its own bers. Vhen it requires replacing, it can be done by any one who possesses skill enough to unscrew a bolt and replace it correctly.

-It has been common, so far as I know, to construct diaphragm-pumps without a checkvalve above the diaphragm; but I have overcome the difficultyl heretofore in the way of using such a valve by placing it in an offset chamber. I also locate the wastehole in said offset chamber, so that at each movement of the valve in opening the waste-hole is closed.A

A is the pump barrel or tube, the length of the same being regulated by the depth of the well. B is the 'foot-valve, which may be of some ordinary and approved'style. -C is the diaphragm-chamber, being an enlargement of the tube A sufficient to receive the flexible diaphragm D.

The chamber C is made in two parts, with flanges e around the larger ends. Bolts pass through said flanges and firmly tie them together, and at the same time firmly clamp the edge of the diaphragm D. For small pumps,

one part of chamber C may be screwed di-.

rectly into the other, and the edge of the diaphragm clamped between the end of the male part and a shoulder within the female part but this method is not convenient except for small constructions.

At the middle ofthe diaphragm D it is fastened securely to a small valve-case, f, which is rigidly attached to the pump-rod g and operated by the lever H, in the usual way. At each downstroke water which is inclosed below by the foot -valve B is forced to pass through the diaphragm D by way of the valve in the case f, and at each upstroke said water is lifted, and a part of the water which is above it is forced out at thetop by way of the outlet I, whence it may be conducted in any direction desired.

It is desirable to relieve the diaphragm from the effects of a column of water resting upon it in obstructing its movement. I therefore provide an offset chamber, J, and locate a check-valve, k, therein. I make this chamber at one side of or offset from the pump barrel or tube, so that the check-valve may bel independent of the pump rod. The pumprod passes down freely through the partition m in said chamber, but the small resulting opening is of no practical importancein working the pump.

It is important, in all pumps which are locatedL where the temperature is liable to drop below freezing, to provide a wasteway for the water held above the moving box or valvecase, which is located below the reach of frost; but it is not desirable to permit so much water to escape as will expose the diaphragm, because a little leakage in the diaphragm-valve will permit the escape of the water above it, and the diaphragm will become dry. I therefore pnt awaste-hole, p, in the top of the cham` ber J, and the water may then escape until its surface reaches the level of said top of chamber J. Usually the waste-hole is always open, and water is being constantly lifted to replace that which runs out and is wasted through said hole. I prevent such constant waste by ICO fz v 340,414-

placing the hole p above the valve k, so that every lift of said valve closes said waste-hole. hile in action the valve k is ofi" its seat a greater part of the time, and correspondingly 5 the Waste-hole is obstructed or closed a greater part of the time. i

Having described my invention, I claim- 1. In a pump, the combination of the diaphragm D, diaphragm-chamber C, and pump- Io rod y with the offset chamber J, with its diaphragm m, valve k, and Wastehole p, whereby the surface of Water in the pump may sink to the level of said top, but not to the level of the valve, as set forth.

2. The combination of the offset chamber J, r 5 provided with a partition, fm, and waste-hole p, with the check-valve k, adapted to close the port in the partition m, and when o said port to close the Waste-hole p, as set forth.

PETER JACOB BODE.

Witnesses:

ADAM MILLER, H. F. KNEBELKAMP. 

